Set in a global like ours however completely inhabited via animals, Buster Moon a dapper koala who presides over a once-grand theater that has fallen on hard times. Buster is an everlasting-some would possibly even say delusional-optimist who loves his theater in particular and will do whatever to maintain it. Now confronted with the crumbling of his life's ambition, he has one very last hazard to repair his fading jewel to its former glory by producing the sector's finest singing competition.